Sensitivity analysis of hydrodynamic models to storm, DEM, and dam configurations: the Bu Mansour Dam Basin in Derna, Libya

IF 5.9 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-10-08 DOI:10.1016/j.asej.2025.103802

Amr S. Samir , Samia Saad , Ashraf M. Elmoustafa

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引用次数: 0

Abstract

Climate change is affecting flood-vulnerable areas in the Mediterranean, highlighted by the 2023 collapse of Bu-Mansour Dam. This study used a 2D hydrodynamic model to estimate the effect of Daniel Storm’s spatiotemporal distribution on maximum pool water elevation behind Bu-Mansour Dam. The study assessed the model feasibility by comparing results to other literature. The study also evaluated how DEM accuracy, rainfall, and dam geometry influenced 2D model results. ALOS DEMs predicted higher overtopping depths than SRTM. Rainfall interpolation increased water levels, while storm temporal distribution affected peak flow but not maximum elevation. Mesh alignment caused elevation differences up to 7.4 m, emphasizing the role of precise model geometry. Discrepancies with prior overtopping estimates were found, suggesting data preprocessing flaws. The study concluded that 2D models are reliable with high-resolution data, though computationally demanding. Revealing the need for accurate hydraulic data and DEMs to ensure accurate dam safety assessment.

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水动力模型对风暴、DEM和大坝配置的敏感性分析：利比亚德尔纳的布曼苏尔大坝盆地

气候变化正在影响地中海易受洪水影响的地区，2023年布曼苏尔大坝的倒塌凸显了这一点。利用二维水动力模型估算了Daniel Storm时空分布对布曼苏尔大坝最大池水高程的影响。本研究通过与其他文献的比较来评估模型的可行性。该研究还评估了DEM精度、降雨和大坝几何形状对2D模型结果的影响。ALOS dem预测的超顶深度高于SRTM。降雨插值增加了水位，而风暴时间分布影响峰值流量，但不影响最高海拔。网格对齐造成了高达7.4米的高程差异，强调了精确模型几何的作用。发现了与先前高估估计的差异，表明数据预处理存在缺陷。该研究得出的结论是，2D模型对于高分辨率数据是可靠的，尽管计算要求很高。揭示了准确的水力数据和dem的必要性，以确保准确的大坝安全评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.